-Why ________ it rain at weekends?-Never mind, let’s watch TV at home.

---Must I finish my homework now ?  ---No, you ________

—Whose schoolbag is this?—It ___________ be Mary’s. It has her name on it.

– May I take the magazine out of the reading room?-- No, you can’t. You            read it here. It’s the rule.

According to the rules and regulations, all payments ________ be made in cash in the shopping center.